Traverse into child LayoutViews during invalidateTreeIfNeeded

Source/core/layout/LayoutObject.h

Index: Source/core/layout/LayoutObject.h
diff --git a/Source/core/layout/LayoutObject.h b/Source/core/layout/LayoutObject.h
index ab0bfad98ae4fd89d6335b20b725642f6d76f775..7d91f0cb022a24c979cecf3176e494f274ed815b 100644
--- a/Source/core/layout/LayoutObject.h
+++ b/Source/core/layout/LayoutObject.h
@@ -621,6 +621,7 @@ public:
     // If paintInvalidationContainer and paintInvalidationContainerSkipped are not null, on return *paintInvalidationContainerSkipped
     // is true if the layoutObject returned is an ancestor of paintInvalidationContainer.
     LayoutObject* container(const LayoutBoxModelObject* paintInvalidationContainer = nullptr, bool* paintInvalidationContainerSkipped = nullptr) const;
+    LayoutObject* containerCrossingFrameBoundaries() const;
     LayoutBlock* containerForFixedPosition(const LayoutBoxModelObject* paintInvalidationContainer = nullptr, bool* paintInvalidationContainerSkipped = nullptr) const;
 
     virtual LayoutObject* hoverAncestor() const { return parent(); }